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 Plotting integrals		  New Topic  Reply to Topic
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benchem

United Kingdom
2 Posts
Posted - 03/11/2014 :  11:28:19 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi all,

I am having trouble drawing integrals onto the spectrum that I have drawn in to Originlabs. Ideally I would like to draw integrals something like this (along with the integration values);

http://acdlabs.typepad.com/photos/uncategorized/2008/04/15/parasubstitutedbenzene_apr142008.gif

Thanks
Ben

lkb0221

China
497 Posts
Posted - 03/11/2014 :  5:29:54 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

You can use Integrate gadget to output partial integral curve data to worksheet easily and then add them to the graph (maybe you will need a Right-Y layer for those integral curves).

Zheng
OriginLab
Edited by - lkb0221 on 03/11/2014 5:32:30 PM
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snowli

USA
1384 Posts
Posted - 03/12/2014 :  12:20:59 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hello,

Origin supports selecting subranges in graph and do analysis.

So after plotting the spectrum, use Selection button (7th button on Tools toolbar) to select the different regions of the plot where you want to calculate integral.

Then choose Analaysis: Mathematics: Integration.
In the dialog, set Plot Integral Curve to be Source Graph.
Click OK
--> Integral plot will draw in each subrange.

Thanks, Snow Li
OriginLab Corp.
Edited by - snowli on 03/12/2014 12:21:25 PM
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